Miscellaneous Genera VI
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Diascia Hampson

Type species: transvitta Moore, Sri Lanka.

The facies of included species is generally as in
hayesi Holloway as described below. The male antennae are finely fasciculate, and the labial palps have the third segment about half the length of the second.

In the male abdomen, the eighth sternite has a single anterior corema, framed, with lateral rods in the centre of each side, posterior to the corema. The tergite is narrowly sclerotised centrally anteriorly, this broadening abruptly over the posterior third. The genitalia have bilateral asymmetry in the valves which are narrow, with a strong interior saccular process, giving a bifid appearance. The sacculi are fused broadly at their bases, obscuring any juxtal structure. The aedeagus vesica has several marked diverticula; there is a basal curved band of sclerotisation and one within the ductus ejaculatorius, but no cornuti.

In the female (
transvitta), the ostium is between the seventh and eighth segments. The ductus is fluted but unsclerotised, and expands from a narrow base into the somewhat convoluted corpus bursae, which has an irregularly thickened apical zone.

In addition to the two species referred to above, the genus includes the African D. nubilata Hampson (Poole, 1989), though this has not been dissected to confirm its placement.

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